let and const are used to declare variables that can be reassigned, but let has block scope, while const has function scope. var is used to declare variables that cannot be reassigned and have block scope.

let and var are used to declare variables that can be reassigned, but var has block scope, while let has function scope. const is used to declare variables that cannot be reassigned and have block scope.

const and var are used to declare variables that can be reassigned, but const has block scope, while var has function scope. let is used to declare variables that cannot be reassigned and have block scope.

let and var are used to declare variables that can be reassigned, but let has block scope, while var has function scope. const is used to declare variables that cannot be reassigned and have block scope.